ckeditor/_source/core/dom/text.js

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/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * @fileOverview Defines the {@link CKEDITOR.dom.text} class, which represents
 *		a DOM text node.
 */

/**
 * Represents a DOM text node.
 * @constructor
 * @augments CKEDITOR.dom.node
 * @param {Object|String} text A native DOM text node or a string containing
 *		the text to use to create a new text node.
 * @param {CKEDITOR.dom.document} [ownerDocument] The document that will contain
 *		the node in case of new node creation. Defaults to the current document.
 * @example
 * var nativeNode = document.createTextNode( 'Example' );
 * var text = CKEDITOR.dom.text( nativeNode );
 * @example
 * var text = CKEDITOR.dom.text( 'Example' );
 */
CKEDITOR.dom.text = function( text, ownerDocument )
{
	if ( typeof text == 'string' )
		text = ( ownerDocument ? ownerDocument.$ : document ).createTextNode( text );

	// Theoretically, we should call the base constructor here
	// (not CKEDITOR.dom.node though). But, IE doesn't support expando
	// properties on text node, so the features provided by domObject will not
	// work for text nodes (which is not a big issue for us).
	//
	// CKEDITOR.dom.domObject.call( this, element );

	/**
	 * The native DOM text node represented by this class instance.
	 * @type Object
	 * @example
	 * var element = new CKEDITOR.dom.text( 'Example' );
	 * alert( element.$.nodeType );  // "3"
	 */
	this.$ = text;
};

CKEDITOR.dom.text.prototype = new CKEDITOR.dom.node();

CKEDITOR.tools.extend( CKEDITOR.dom.text.prototype,
	/** @lends CKEDITOR.dom.text.prototype */
	{
		/**
		 * The node type. This is a constant value set to
		 * {@link CKEDITOR.NODE_TEXT}.
		 * @type Number
		 * @example
		 */
		type : CKEDITOR.NODE_TEXT,

		getLength : function()